0 a small vehicle like a bicycle with two wheels at the back and one at the front, used especially by young children -- （尤指兒童騎的）三輪腳踏車
Nineteen sizes of tyres are currently in use, including tyres on invalid wheelchairs, hand-propelled and pedalled tricycles and powered three-wheelers.
The primary consideration was whether these lamps and fittings would suit the tricycles.
Naturally, the recommendation that invalid tricycles should be replaced by small cars is one which most people would heartily welcome.
Why does not "motor tricycle" mean a three-wheel motor vehicle?
It may well be that there is a need for each of these types of vehicles—the motor car, the petrol-driven tricycle and the electrically-driven tricycle.
Others with provisional licences welcome the mobility they now enjoy in driving invalid tricycles.
We expect to carry on maintaining them, and it is our policy to replace worn-out tricycles.
The new type of motor tricycle embodies a number of new features based on experience of the special needs of seriously disabled persons.
